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20+2(t-10)+7=9t+11-7t-4
We move all terms to the left:
20+2(t-10)+7-(9t+11-7t-4)=0
We add all the numbers together, and all the variables
2(t-10)-(2t+7)+20+7=0
We add all the numbers together, and all the variables
2(t-10)-(2t+7)+27=0
We multiply parentheses
2t-(2t+7)-20+27=0
We get rid of parentheses
2t-2t-7-20+27=0
We add all the numbers together, and all the variables
=0
t=0/1
t=0
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